Mold



I 0a. a, 1925. 1,555,878

E. M. nus-r HOLD Filed Feb. 25, 1925 2 Sheets-Sheet 1 H] nu 1 l l 5 1 l I] u :ED

iz 'arz Inventor.

Patented Oct. 6, 1925.

1,555,87 B'FTENT' FI E- sngs om nanjsaazn'anscn, on wesnme'i roixr, DISTRICT or coLuMisIA, ASSIGNOR 'ro 'rnnnusrnnemnnnme oo rA Y, or PITTSBURGH, PENNSYLVANIA, A con- 'r lmrq r DELAWARE.

w'lhis i'n ventionurelates tozmolds and more particularly to sectional molds used in build-. mg concrete 'chlmneys' I and I sim ilar mono lithi'c concrete structures.

tzsThe Eprin'cipal i'oblj ect? of "this invention I is usiprovide' a rnold otlthe-above class with anoveh means :for :niountin and supporting stepkirons to! Joe embedde dwin the finished articlegtoi form a; ladderlu': 311 'z Another-object; is: loproyide -a mold of the above: e'las's wiiih sone' er. :more of it-ssections provided. with .theimeahs fornmounting and supporting I the: step irons; :so rthat' the I section my be used5 in molds of varioussizes. I i :A fiturthe-r: obiecthis-tofiprovide a=imold having! the novel construction,- arrangement,- and combination -of parts hereinafter described: and illustratedin the accompanying drawings.- ."I. i In the drawings: I 2 I Figure I is an elevation, partly in section, showing'a tapering'sectional mold embodying' the novel features of this invention.

Figure 2 is a partial plan of the mold of Fi ure 1. l I

Figure 3 is anenlarged elevation of a portion of the moldse'ction having the step ironmounting-therein.

-Fi, rr.re4. is a fragn'ientary sectional cleation-through the. mold, showing the step iron "mountings. I

'- Figure 5 is. a sectional plan showing a mounted step iron;

Referring more particularly to the draw-' ings.=- the letter A designate'sfa completed portion of a circular chimney constructed with my improved form of mold B, which-1s shown assembled above or on top of the i Ieinpleted portion off-the chimney, The

" ield "B is con'rposed: of, a :plurality'of de-- tachabl connected sheet' metal sections :2. The mold'B is'adapted to cooperate with a segmental, annular core G to form a closure for receiving the concrete.

The mold B, when in use, is suspended from air-annular ad1ust1ng ring D, WlllCll'lS made in sections. and when in operative po-r.

sitiqmfi the ring;1); Tia-adj u'stably suspended 5 "Application filed February 2 ,"1925. Serial m. 11,509.

or hung by suitable tackle, such as a block and 'fallifrom a scaffold'or arms onthe upper end-of the scafiold. I I I I i 'lhe scafl'old, which may beof any of the several old and well known constructions,

a'n'd which'is not shown, will be built on the inside or'outside' of the chimney A and will extend'through the "annularcore G to a point somewhat above the completed por-' tion of the chimney, the scaffold being lengthenedhzfrom time to'time in keeping itsupperend above the finished part ofthe chimney 1A and mold B .so'asto enable=the mold- 13 to='be lifted-:and reassembled above the upper' end of I the formed part I of the cliimneyfu- 1 T.- .'On'e.'of the'sections 2"ofithe i'noldvBiis= provided with avplurality' ofitransversely arranged elongatedtrectangular openings or slots 4, isp'a'ced .equi -distant I :verticallyQ- The openings I or; slots i 4 are I provided: to I permit the mounting-of Ui'shaped step irons-i5 in the mold so that their ends willtproject into he concrete re'ceiving space and their step portions will project outwardly from the mold. lVith the step irons mounted in the mold,- as-described above, their ends will be surrounded by and embedded in the concrete of the chimney as the concrete is poured thus furnishing a continuous ladder or line of steps up the side of the chimney when it is completed.

The section 2 of the mold having the open- 4 therein is reinforced around and adjacent each of the openings lby reinforcing plates 6, which areprovided with an opening orslot '7 of the same shape and size as the openings 4. lhc plates 6 are positioned on the outer surface of the mold \vith their openings 7 in alinement with the openings 4 and are-fixedly secured in position by rivets 8. I I

A; ren'iovab-le supporting and locking plate 9 is provided for each of the step iron openlms. and comprises an elongated plate menihaving vertically arranged open ended slots 10 opeuing upwardly from its lower edge. The plates 9 are mounted over the reinforcing plates 6 and the slots 1.0 are adapted-to receive the side arms of the step irons.- The slots 1.0 are of a: width adapted to snugly engage the side arms of the step irons 5, and the plates 9 are provided with a plurality 0t elongated openings or slots 12 too receive bolts .orjscrews 13 which are Ill) screwed; into threaded aperturesi-l tin the plates :6 io-locklthe plates in position. The slots 12 are so positioned that the closed end ofthe step iron receiving slotsLO will en: gage h tep irons whenthe bolts or, screws 13"are'screwedhome. Tlie slots 12"also permit the plates 9 to be adjusted transversely;- of the mold to position the step irons in time, and serve to lookgtherstep; irons-ins position when the screws 13 are screwed home:

In :orden to assure proper: and equal 'spac ing of the stepirons 5ioutwardly from-the finished chimney a spacing timber 15' or other, similar spacing member is preferably inserted: between the outer face of: the mold and-the-step irons:5, amd all the step irons positioned-so as;to contact withsaid member'15';

In operation the step irons 5 areipassed through the openings'i in the moldisection fromihe reara of thermold; the plates 9 are then mounted; in; position, the step irons linedzup, andrthe bolts- :or-screws: 13" are then tightened to lockrtlie steplironsin position.

While I have shown and described'fonly one embodimentiof my invention itwill be understood that I do' not' wish' tobe limited to the several 1 details thereof',' since changes in design,- construction and-combination of the various: elements will readily suggest themselves to those skilled in the art and may be: made withontr departing from the scope-of-"my'invention asdefinedin the appended claims,-

I claim:

1. In a sectional mold composed'of'a plurality of sections andused'in-building concrete-chimneys and similar monolithic concretewstructures, a section provided with a plurality ofopenings:adaptedto permit the mounting of step irons:so-that portions of said 'irons'project into said mold, to be surrounded by and embedded in the concrete put in the mold, and other portions project outwardly from said'inold to form step portions, and means for supporting saidirons in position while said mold is beingfilled with concrete.

2: In a sectional mold'composed of a plura-lity of'sectiOnsand used in building-concrete chimneys and similar monolithic concrete-structures, a section provided with a plurality of' openings-adapted'to permit the mounting of step irons'so that portions of ifllfilrlIOIlS' project into said mold, to be surrounded by and embedded in the concrete put in the mold, and other portions project outwardlyfromsaidmold toform step portions, and means detchablymounted on said section for engaging and locking said irons in position.

3; In a sectional:moldcomposed of a plurality of sectionsand used in building conci'ete chimneys and similar monolithic concretestructures, a section. provided with a plurality ofopenings adapted to permit the mounting of step irons so that portions of said irons project intosaid mold, to be surrounded. by. and embedded; in. the. concrete putin the mold, and; other,por.tionsproject outwardly from said'moldto form step portions, reinforcing members secured to said section) to: reinforce said section adjacent said openings, and means for supporting and locking said-irons-in position.

4a..In;a sectional mold'composedofa pluralityxofr sections and used;in' building concrete. chimneys; and similar monolithic concrete structures, a sectionprovided' with a plurality-of: openings adapted to permit the mounting of step: irons-so that portions of said: irons: projectinto said? mold, to be surrounded by. and embedded. in the concrete put inz'the mold,and other portions project outwardly fromzsaid=moldto form step portions-, reinforcing plates having openings-therein.adapted to be aliiiedwith the openings :insaidE'section, said' plates being! secured. to. said sections,-. and means cooperating with said. plates for supporting and locking said irons inposition;

5. 'Ima sectionalinold-composed of a plurality ofsectionsand: usedin vbuilding'concrete chimneys vandi similar-- monolithic concrete-structures, a section provided with a plurality 'of Openingsadapted to-permit the mounting of" step irons: so that: portions of said irons'xproject into said:mold,to be surrounded by' and embedded inthe concrete put in the mold, and other portions" project outwardly from said mold'to form step portions, reinforcing plates: having openings therein adapted to bealined'with the openingsin said section, said plates being secured to said sections; and supporting and locking plates detachably secured to said reinforcing plates and adapted to support and lock-said irons in position.

6. In a sectional moldcomposed'of a plurality ofsections and used in building concrete chimneys and similar monolithic concrete structures, a section provided with a pluralityof transversely arranged elongated slots adapted to permit the mounting of step ironsiso that portions of'said irons project into said moldand other portions project outwardly-fromsaid mold'toform step portions, reinforcing plates having openings therein duplicate in size and shape to the opening in said mold section and adapted to'bealined with said openings in said section; said'plates being fixedly secured to said' section, and supportingandlocking plates detachablysecured'to said reinforcing plates and adapted'to support and lock said irons in'position.

In testimony whereof I have hereunto signed my'name;

ELLSWORTI-ILMARSHALL RUST. 

